# NAICS code for engineering The NAICS code for engineering is 541330 (Engineering Services). Its SBA small business size standard is $25.5 million in average annual receipts. This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. List 541330 as your primary NAICS code in SAM.gov if engineering is your main line of business.Source: NAICS 2022 (Census).Official source: [U.S. Census Bureau NAICS](https://www.census.gov/naics/) | Industry | Engineering | | --- | --- | | Primary NAICS | [541330](https://samgovapi.io/naics/541330) | | Title | Engineering Services | | Size standard | $25.5 million in average annual receipts (13 CFR 121.201) | ## Nearby codes in the same industry group | Code | Title | Size standard | | --- | --- | --- | | [541330](https://samgovapi.io/naics/541330) | Engineering Services | $25.5 million in average annual receipts | | [541310](https://samgovapi.io/naics/541310) | Architectural Services | $12.5 million in average annual receipts | | [541320](https://samgovapi.io/naics/541320) | Landscape Architectural Services | $9 million in average annual receipts | | [541340](https://samgovapi.io/naics/541340) | Drafting Services | $9 million in average annual receipts | | [541350](https://samgovapi.io/naics/541350) | Building Inspection Services | $11.5 million in average annual receipts | ## What NAICS 541330 covers This industry comprises establishments primarily engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services. ## Examples classified under 541330 - Acoustical engineering consulting services - Acoustical system engineering design services - Audio visual system engineering design services - Boat engineering design services - Chemical engineering services - Civil engineering services - Combustion engineering consulting services - Construction engineering services ## Also searched as engineering consulting, engineering services ## Get this as JSON ``` curl "https://samgovapi.io/api/v1/naics/541330" \ -H "Authorization: Bearer sg_YOUR_KEY" ``` MCP tool: `naics_lookup`Keys start free, with no card. [Get a free API key](https://samgovapi.io/sign-up) or read the [docs](https://samgovapi.io/docs). ## Questions What is the NAICS code for engineering?The NAICS code most used for engineering is 541330, Engineering Services.Is a engineering business small for federal contracts?For NAICS 541330, a business is small at or under $25.5 million in average annual receipts (13 CFR 121.201), counting affiliates.Can I list more than one NAICS code?Yes. A SAM.gov registration can list many NAICS codes with one marked primary; each solicitation names the single code that applies to it. ## Related - [NAICS 541330](https://samgovapi.io/naics/541330) - [NAICS code lookup](https://samgovapi.io/naics-code-lookup) - [Size standard checker](https://samgovapi.io/size-standard-checker) - [NAICS code for an industry](https://samgovapi.io/naics-code-for)Independent. Not affiliated with, endorsed by or sponsored by GSA, SAM.gov or any U.S. government agency. Registering in SAM.gov is free at sam.gov.

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